Techniques exist for imaging clients over a network, such as the preboot execution environment (PXE) protocol. However, such techniques may not scale well (e.g., using broadcast messages and having few facilities for distributing the imaging service over several servers) and limited capacity to choose a particular image for a particular client. Instead, a set of servers may be configured such that each server is assigned a set of clients, and when a client sends an imaging query, only the server to which the client is assigned sends a reply. For example, a PXE server also comprising a DHCP server may reply to queries only for clients having a DHCP reservation on the server. The servers may also be configured to refer to a network map (e.g., a manageability data store) in order to identify the role of the client and the appropriate image to direct the client to apply.